Example usage for android.opengl GLES20 glGenFramebuffers

Introduction

In this page you can find the example usage for android.opengl GLES20 glGenFramebuffers.

Prototype

public static native void glGenFramebuffers(int n, int[] framebuffers, int offset);

Source Link

Usage

From source file:Main.java

/**
 * Creates a new frame buffer object.  This is typically used when rendering to textures.
 *
 * @return GL handle to frame buffer//w  ww.j a v a2s. com
 */
public static int createFrameBuffer() {
    int[] frameBufferHandles = new int[1];
    GLES20.glGenFramebuffers(1, frameBufferHandles, 0);
    return frameBufferHandles[0];
}

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From source file:eu.sathra.SathraActivity.java

@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
    if (mParams.width == 0 && mParams.height == 0) {
        mParams.width = width;/*ww w. j av a 2 s . c  om*/
        mParams.height = height;
    } else if (mParams.width == 0) {
        float screenRatio = width / (float) height;
        mParams.width = (int) (mParams.height * screenRatio);
    } else if (mParams.height == 0) {
        float screenRatio = height / (float) width;
        mParams.height = (int) (mParams.width * screenRatio);
    }

    gl.glViewport(0, 0, width, height);// mParams.width, mParams.height);

    Log.debug(String.format(SURFACE_CREATE_MSG_FORMAT, width, height, mParams.width, mParams.height));

    if (!mWasInitiated) {
        GLES20.glGenFramebuffers(1, buf, 0);
        GLES20.glGenTextures(1, tex, 0);
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, tex[0]);
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
        IntBuffer tmp = ByteBuffer.allocateDirect(mParams.width * mParams.height * 4)
                .order(ByteOrder.nativeOrder()).asIntBuffer();
        GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGBA, mParams.width, mParams.height, 0,
                GLES20.GL_RGBA, GLES20.GL_UNSIGNED_SHORT_4_4_4_4, tmp);

        shad = new Sprite(new Texture(tex[0], mParams.width, mParams.height));
        shad.setPivot(0.5f, 0.5f);

        onEngineInitiated();

        mWasInitiated = true;
    }
}

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